|Year|Location|Gold|Silver|Bronze|
|---|---|---|---|---|
|1958|Tokyo|Sachika Kamo|Desideria Ampon|Liu Shang-Ku|
|1962|Jakarta|Akiko Fukui|Reiko Miyagi|Desideria Ampon  Patricia Yngayo|
|1966|Bangkok|Lany Kaligis|Kazuko Kuromatsu|Lita Liem Sugiarto  Phanow Sudsawasdi|
|1974|Tehran|Lita Liem Sugiarto|Paulina Pesahov|Lany Kaligis|
|1978|Bangkok|Lee Duk-Hee|Chen Chuan|Kiyoko Nomura  Sonoe Yonezawa|
|1982|New Delhi|Etsuko Inoue|Kim Soo-Ok|Yu Liqiao|
|1986|Seoul|Li Xinyi|Lee Jeong-Soon|Kim Soo-Ok|
|1990|Beijing|Akiko Kijimuta|Chen Li|Park Mal-Sim  Kim Il-Soon|
|1994|Hiroshima|Kimiko Date|Naoko Sawamatsu|Yayuk Basuki  Chen Li|
|1998|Bangkok|Yayuk Basuki|Tamarine Tanasugarn|Li Fang  Yi Jingqian|
|2002|Busan|Iroda Tulyaganova|Tamarine Tanasugarn|Shinobu Asagoe  Cho Yoon-Jeong|
|2006|Doha|Zheng Jie|Sania Mirza|Li Na  Aiko Nakamura|
|2010|Guangzhou|Peng Shuai|Akgul Amanmuradova|Kimiko Date-Krumm  Sania Mirza|

Question: how many silver medals did contestants from japan win?
Answer: 3